D Major triads fret walking

This simple warm-up is based on D Major triads. These are the three shapes you will be playing.

Shapes

Here's the exercise, pick alternate, three notes each time. It progresses up the fret shape by shape. D Em F#m G A Bm C#dim and back on D shape. When you reach the D shape go backwards the shapes. Your fret hand won't do much work but your picking hand will pick more than 500 times.

D Major